Influence of heat treatment (routes) on the microstructure and mechanical properties of 300M ultra high strength steel

Kasana, Shivraj Singh; Sharma, Sandeep; Pandey, O.P.

doi:10.1007/s43452-022-00439-z

Cited by 11 publications

(1 citation statement)

References 20 publications

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“…However, there are limited public findings regarding the impact of heat treatment processes on the properties of this type of steel [2][3]. For instance, a study conducted by Ma et al [4] demonstrated that the inclusion of Co in 300M can enhance its strength and hardness. Moreover, an increase in Co content resulted in a decrease in residual austenite levels and an increased presence of carburite precipitation.…”

Section: Introductionmentioning

confidence: 99%

Effect of tempering temperatures on microstructure and mechanical properties of high-strength steel

Zhang,

Li,

Sun

et al. 2024

J. Phys.: Conf. Ser.

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This study thoroughly examines the effects of tempering temperature on the structure and mechanical properties of high-strength steel. The objective is to establish a solid foundation of raw materials for the production of relevant equipment. Experimental results show that: when tempering temperatures between 180°C~300°C, with the increase of tempering temperature, the tensile stress of the material decreases gradually, and the yield strength tends to increase. The comprehensive mechanical properties of the alloy are optimized in plasticity and toughness, and it can be seen that the strength reaches an excellent balance at 180°C. The carbide precipitation and impact fracture characteristics are analyzed by scanning electron microscopy and transmission electron microscopy, and it is found that a large number of needle-shaped ε-carbides are precipitated in the martensite lath, and the size of the ε-carbides increases with the increase in tempering temperature, which is the reason for the gradual decrease in the yield strength of the experimental steel with the increase in tempering temperature.

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Section: Introductionmentioning

confidence: 99%

Effect of tempering temperatures on microstructure and mechanical properties of high-strength steel

Zhang,

Li,

Sun

et al. 2024

J. Phys.: Conf. Ser.

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Effects of Different Austenitizing Times on the Microstructure and Properties of Cr‐Ni‐Mo‐V Series High‐Strength Steels

Zhang,

Lu,

Cheng

et al. 2024

steel research int.

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Herein, the effects of varying austenitizing times on the microstructure and mechanical properties of Cr‐Ni‐Mo‐V series high‐strength steel are investigated, discussing the mechanisms that enhance strength and toughness. By controlling the austenitizing duration, the microstructure during subsequent heat treatments is improved, leading to enhanced overall mechanical properties. The experimental steel undergoes treatments at different austenitizing times, and the microstructure is characterized using optical microscopy, energy‐dispersive spectroscopy, field emission scanning electron microscopy, and X‐ray diffraction. Mechanical properties are assessed through tensile testing, impact testing, and microhardness measurements. The results indicate that, when comparing an austenitizing time of 1 to 1 h and 15 min, the ultimate tensile strength decreases by 10%, microhardness reduces by 78.2 HV, elongation increases by 1.39 times, and toughness improves by 80%. The enhancement in toughness is primarily attributed to the synergistic effect of tempered martensite and bainite within the microstructure. Fracture morphology analysis reveals that variations in austenitizing time affect carbide distribution, accelerate carbide dissolution, decrease the crack growth zone, and enhance toughness. This study provides valuable insights for designing Cr‐Ni‐Mo‐V series high‐strength steels with optimal strength‐toughness synergies.

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Additive manufacturing of ultra-high strength steels: A review

Yang

Gong

et al. 2023

Journal of Alloys and Compounds

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Influence of heat treatment (routes) on the microstructure and mechanical properties of 300M ultra high strength steel

Cited by 11 publications

References 20 publications

Effect of tempering temperatures on microstructure and mechanical properties of high-strength steel

Effect of tempering temperatures on microstructure and mechanical properties of high-strength steel

Effects of Different Austenitizing Times on the Microstructure and Properties of Cr‐Ni‐Mo‐V Series High‐Strength Steels

Additive manufacturing of ultra-high strength steels: A review

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